Gear guide structure heating cigarette

Abstract

The utility model discloses a gear flow guide structure heating cigarette belongs to heating non -combustible technical field, including gear structure filter stick, smoking section and guide piece, and the both ends of smoking section are connected gear structure filter stick and guide piece respectively, and the inside of smoking section is equipped with heating cavity, and the inside of guide piece is equipped with guide cavity, and heating cavity is linked together with guide cavity, gear structure filter stick outside ring side is equipped with a plurality of tooth slot along the axial direction, and tooth slot cross section is half round structure setting, and the ratio of the depth of tooth slot and tooth diameter is between 0.25 0.75, and the outside of gear structure filter stick is covered with the formed paper. The utility model discloses a cigarette of heating cigarette is set up as the multiple composite structure, adds gear structure filter stick, and the flue gas is divided to the surface of filter stick after passing through gear structure filter stick, makes the flue gas can realize sufficient contact with external environment to cool down, improves the smoking experience of the person who draws in breath.

Description

Technical Field

[0001] This utility model belongs to the field of heated cigarette technology, specifically relating to a gear-guided structure for heated cigarettes. Background Technology

[0002] The statements herein provide only background information related to this invention and do not necessarily constitute prior art.

[0003] Heated cigarettes involve placing the tobacco-generating section in a specialized heating device for temperature-controlled heating, producing smoke. When the metal heating element inside the device is directly inserted into the tobacco matrix for contact heating, the tobacco material undergoes a carbonization reaction under repeated heating, resulting in the accumulation of stubborn tar residue on the surface of the heating element. This makes the heating element difficult to clean and maintain, affecting its service life. In existing technologies, to avoid direct contact between the heating element and the tobacco material, a hollow tobacco section is incorporated into the cigarette. The heating element is placed inside the heating space of this hollow tobacco section to avoid the aforementioned problems. A filter unit is typically located near the mouthpiece of the hollow tobacco section; existing filter units are solid cylindrical structures made of cellulose acetate.

[0004] However, this design has several drawbacks. First, the heating element in the heated tobacco device is prone to shifting when it is introduced into the heating space inside the hollow tobacco section, damaging the internal structure of the cigarette and affecting the heating and smoke production. Second, the smoke generated after heating by the heating element is more likely to pass directly through the heating space in the middle of the hollow tobacco section to the filter unit and then into the smoker's mouth during inhalation. Since heated cigarettes heat the entire hollow tobacco section, which is a relatively long heating area, the smoke generated, even after being filtered by a traditional filter unit, is still at a high temperature. This high temperature smoke entering the smoker's mouth directly not only affects the smoker's smoking experience but also easily causes burns and other damage to the smoker's mouth. Furthermore, different tobacco matrices will result in higher-temperature smoke that degrades the taste of the smoke. Currently, there is a lack of effective methods to ensure that the smoke entering the mouth is at a suitable temperature to improve the taste of the smoke. Utility Model Content

[0005] The purpose of this invention is to provide a gear-guided structure for heating cigarettes. The cigarette is designed as a multi-component composite structure with a gear-structured filter rod. After passing through the gear-structured filter rod, the smoke is diverted to the surface of the filter rod, allowing the smoke to fully contact the external environment and cool down to a suitable temperature. This ensures that the smoke is not too hot and may damage the mouth, while also maintaining the taste of the smoke and improving the user's smoking experience.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0007] In a first aspect, an embodiment of the present invention provides a gear-guided structure for heating cigarettes, including a gear-structured filter rod, a smoke-generating section, and a guide member. The two ends of the smoke-generating section are respectively connected to the gear-structured filter rod and the guide member. The smoke-generating section has a heating cavity inside, and the guide member has a guide cavity inside. The heating cavity and the guide cavity are in communication.

[0008] The gear-structured filter rod has multiple toothed grooves along the axial direction on the outer ring side. The cross-section of the toothed groove is semi-circular. The ratio of the depth of the toothed groove to the tooth diameter is between 0.25 and 0.75. The gear-structured filter rod is covered with molded paper.

[0009] As a further technical solution, the ratio of the axial length of the gear structure filter rod to the axial length of the smoke-generating section is between 0.3 and 0.5.

[0010] As a further technical solution, the heating cavity is configured as a cylindrical cavity structure along the axial direction of the smoke-generating section, and the guide cavity is configured as a cylindrical cavity structure along the axial direction of the guide member.

[0011] As a further technical solution, the diameter of the guide cavity is greater than or equal to the diameter of the heating cavity.

[0012] As a further technical solution, the guide cavity of the guide member is provided with a hollow heat insulation tube.

[0013] As a further technical solution, the hollow heat insulation tube is configured as any one of glass fiber tube, high silica fiber tube, silica sleeve, high silica sleeve, and basalt fiber tube.

[0014] As a further technical solution, the heating cavity is provided with a hollow heating tube.

[0015] As a further technical solution, the hollow heating tube has multiple vent holes on its side wall.

[0016] As a further technical solution, the gear-structured filter rod is made of cellulose acetate material.

[0017] As a further technical solution, the radial diameters of the gear structure filter rod, smoke-generating section, and guide are all kept consistent.

[0018] The beneficial effects of the above-described embodiments of this utility model are as follows:

[0019] This utility model provides a gear-guided heated cigarette. By setting the heated cigarette into a multi-component composite structure and incorporating guide members, the heating element can be smoothly introduced into the heating chamber inside the smoke-generating section, ensuring effective heating and smoke generation. Combined with a gear-structured filter rod, the smoke is diverted to the surface of the filter rod after passing through it, allowing the smoke to fully contact the external environment, thus cooling it and improving the smoker's experience. Specifically:

[0020] The heating chamber inside the smoking section is equipped with hollow heating tubes and vents, which allows the heating element to heat the smoking material precisely and evenly. The two work together to achieve efficient smoking of the tobacco matrix. The hollow heat insulation tube in the guide cavity not only insulates the heat but also provides some support and guides the airflow. The gear structure filter rod, with its external toothed design, further guides and diverts the smoke to cool it down. It diverts the smoke that was originally concentrated in the center to the surface of the gear structure filter rod, increasing the contact area between the smoke and the external environment. With the help of the outside air, it can quickly cool down to a suitable temperature, thus preventing the smoke from being too hot and damaging the mouth, while ensuring the taste of the smoke. This effectively solves the problem of the smoke temperature of heated cigarettes being too high and affecting the smoking experience.

[0021] In addition, the gear structure filter rod is made of cellulose acetate material. Its porosity and molding characteristics not only meet the molding requirements of the gear structure, but also facilitate the flow and diversion of flue gas inside and on its surface. At the same time, it can filter large harmful particles and improve the flue gas filtration effect. Attached Figure Description

[0022] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0023] Figure 1 This is a front sectional view of the overall structure of a gear-guided heating cigarette provided in Embodiment 1 of this utility model;

[0024] Figure 2 This is a front sectional view of the gear structure filter rod provided in Embodiment 1 of this utility model;

[0025] Figure 3 This is a side sectional view of the gear structure filter rod provided in Embodiment 1 of this utility model.

[0026] The diagram is for illustrative purposes only.

[0027] Among them, 1. Gear structure filter rod; 2. Gear groove; 3. Smoke generating section; 4. Hollow heating tube; 5. Heating cavity; 6. Guide component; 7. Guide cavity. Detailed Implementation

[0028] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0029] Example 1

[0030] In a typical embodiment of this utility model, such as Figures 1 to 3 As shown, a gear-guided structure for heating cigarettes is provided, including a gear-structured filter rod 1, a smoke-generating section 3, and a guide member 6. The two ends of the smoke-generating section 3 are respectively connected to the gear-structured filter rod 1 and the guide member 6. A heating cavity 5 is provided inside the smoke-generating section 3, and a guide cavity 7 is provided inside the guide member 6. The heating cavity 5 and the guide cavity 7 are in communication.

[0031] The gear structure filter rod 1 has multiple toothed grooves 2 along the axial direction on the outer ring side. The toothed grooves 2 have a semi-circular cross-section. The ratio of the depth of the toothed grooves 2 to the tooth diameter is between 0.25 and 0.75. The gear structure filter rod 1 is covered with molded paper.

[0032] By setting up a multi-segment composite structure for the cigarette, the guide 6 can ensure that the heating element can smoothly enter the heating cavity inside the smoke generation section 3. On this basis, the gear structure filter rod 1 can effectively divert the smoke to the tooth groove 2 channel outside the gear structure filter rod 1 when it passes through, so that the smoke can fully contact the external environment to cool down, improve the smoking experience, and avoid the hot smoke from burning the mouth.

[0033] In this embodiment, the gear-structured filter rod 1 is positioned near the mouthpiece to divert and cool the flue gas, while the guide 6 is positioned at the far mouthpiece to smoothly insert the cigarette into the heating device. The semi-circular toothed groove 2 on the outer ring side of the gear-structured filter rod 1 significantly increases the surface area of ​​the gear-structured filter rod 1, thereby increasing the heat exchange area between the flue gas and the gear-structured filter rod 1. Furthermore, when high-temperature flue gas passes through the toothed groove 2, it can achieve more efficient heat exchange through contact with the external environment, thereby reducing the flue gas temperature. The ratio of the toothed groove 2 depth to the tooth diameter is optimized between 0.25 and 0.75, which can avoid insufficient heat dissipation due to the toothed groove 2 being too shallow, and also prevent the filter rod structure strength from decreasing or the airflow resistance from being too high due to the toothed groove 2 being too deep.

[0034] The forming paper not only fixes the shape of the gear structure filter rod 1, but also prevents the filter rod material from deforming due to high temperature or humidity, ensuring long-term stability.

[0035] Furthermore, the ratio of the axial length of the gear-structured filter rod 1 to the axial length of the smoke-generating section 3 is between 0.3 and 0.5. This design ensures that the smoke stays in the gear-structured filter rod 1 long enough to achieve sufficient heat dissipation, while avoiding increased suction resistance due to excessive length of the gear-structured filter rod 1. This balances cooling efficiency and user experience, preventing users from experiencing suction discomfort due to excessive suction resistance.

[0036] Furthermore, the heating chamber 5 is configured as a cylindrical cavity structure along the axial direction of the smoke-generating section 3, and the guide cavity 7 is configured as a cylindrical cavity structure along the axial direction of the guide member 6.

[0037] This design, with its cylindrical cavity structure matching the shape of common heating elements, ensures stable placement of the heating element within the heating chamber 5, resulting in uniform heating of the smoke-generating section 3. This facilitates thorough heating and smoke generation of the tobacco matrix while preventing direct contact between the heating element and the tobacco matrix, thus avoiding the adhesion of contaminants to the heating element. The guide cavity 7, with its cylindrical cavity structure, is compatible with existing heating elements and effectively guides the heating element, preventing it from inserting into the tobacco matrix. Furthermore, the cylindrical structure of the guide cavity 7 facilitates the smooth flow of smoke to the gear-structured filter rod 1, reducing eddies and resistance during the smoke's journey to the filter rod and ensuring smooth inhalation.

[0038] Furthermore, the diameter of the guide cavity 7 is greater than or equal to the diameter of the heating cavity 5. This arrangement ensures that the guide member 6 can smoothly perform its guiding function, allowing the heating element to smoothly enter the heating cavity 5.

[0039] Furthermore, the guide cavity 7 of the guide member 6 is provided with a hollow heat insulation tube. The hollow heat insulation tube blocks the heat transfer between the guide cavity 7 and the external environment, preventing the guide member 6 from being damaged due to prolonged heating. The hollow heat insulation tube is any one of glass fiber tube, high silica fiber tube, silica sleeve, high silica sleeve, and basalt fiber tube, which can effectively isolate heat from being transferred to the guide member 6 and improve the durability of the guide member 6.

[0040] Furthermore, the heating chamber 5 is equipped with a hollow heating tube 4, which is embedded inside the heating chamber 5 to directly heat the tobacco material in a non-contact manner. This avoids the tar residue problem caused by direct contact between traditional heating elements and tobacco. At the same time, uniform heating improves the stability of aerosol generation. The hollow heating tube 4 has multiple vent holes on its side wall, which are distributed on the side wall of the hollow heating tube 4 to ensure that heat is evenly transferred to the tobacco material in the form of radiation and convection. This ensures sufficient heat output while avoiding local overheating that could lead to carbonization, thereby reducing the generation of harmful substances.

[0041] Furthermore, the gear-structured filter rod 1 is made of cellulose acetate material. Cellulose acetate material has high adsorption and biodegradability, effectively capturing tar and particulate matter in flue gas, while its porous structure does not significantly increase suction resistance.

[0042] Furthermore, the radial diameters of the gear-structured filter rod 1, the smoke-generating section 3, and the guide member 6 are all consistent. This design ensures a compact overall structure and good sealing of the cigarette, avoiding air leakage or sudden airflow changes caused by diameter differences, resulting in a continuous and stable smoke flow path, further improving cooling efficiency and the user's smoking experience.

[0043] Example 2

[0044] Based on Example 1, any one of the following structures can be added to the cigarette structure with gear structure filter rod 1: cigarette filter rod, hollow filter rod, porous filter rod, Collins filter rod, concentric circle filter rod, and spiral cooling component, to form a quaternary composite multi-segment cigarette structure, further improving the smoking experience of heated cigarettes.

[0045] The filter rod can be made of cellulose acetate material into a solid cylindrical structure with the same diameter as the gear structure filter rod 1. The flue gas enters the filter rod through the gear structure filter rod 1, further enhancing the filtration effect of the flue gas.

[0046] The hollow filter rod is configured as a hollow tubular structure with the same diameter as the gear structure filter rod 1, arranged along the axial direction. Several vent holes are provided on the tube wall, so that external air can enter the inner cavity of the hollow filter rod through the vent holes during the suction process, thereby further cooling the flue gas.

[0047] The porous filter rod is configured with multiple flue gas channels arranged along the axial direction. The diameter of the multiple flue gas channels is smaller than the diameter of the heating chamber 5. After the flue gas passes through the gear structure filter rod 1, it enters the porous filter rod, realizing the diversion and acceleration of the flue gas. The flue gas achieves collision filtration at the contact end of the two structures. After the flue gas enters the multiple flue gas channels, it is mixed due to the smaller diameter of the flue gas channels, further improving the mixing effect of the flue gas and the smoking taste.

[0048] The Collins filter rod is designed with a flue gas flow channel in the middle along the axial direction and multiple flue gas through holes on the circumferential side. The diameter of the flue gas flow channel is smaller than the diameter of the heating chamber 5, which realizes the step rheological transformation of the flue gas and improves the filtration effect.

[0049] The concentric circle filter rod adopts a composite structure of concentric circle rods, filter material, and coating layer. It increases the central suction resistance of the smoke-generating section 3, which has a heating chamber 5 inside. This allows the smoke and aerosol particles generated by the smoke-generating carrier under the action of the heat source (heating body) to be filtered and released through the outer concentric circle cavity filter material of the concentric circle structure, thereby improving the interception effect of large aerosol particles in the smoke.

[0050] The spiral cooling component has baffles at both ends, with vent holes on the baffles. A spiral structure is set between the two baffles to turbulent the flue gas and increase the flow path of the flue gas to achieve cooling.

[0051] In the production process, the four-element composite multi-segment cigarette structure in this embodiment can be produced separately and then assembled. For example, the filter rod, gear structure filter rod 1, hollow cigarette segment and guide 6 can be formed into two-element composite filter rods on the filter rod composite equipment. Then, the two two-element composite filter rods can be joined together by a joining machine to produce heated cigarettes of this structure type, i.e., production in a 2+2 mode.

[0052] Alternatively, any three of the above-mentioned cigarette filter rods, hollow filter rods, porous filter rods, Collins filter rods, concentric circle filter rods, and spiral structural components can be combined into a ternary composite filter rod, which is then twisted together with a single-structure filter rod to form a 1+3 or 3+1 production model.

[0053] Example 3

[0054] Based on Example 1, any two of the following structures can be added to the cigarette structure with gear structure filter rod 1: cigarette filter rod, hollow filter rod, porous filter rod, Collins filter rod, concentric circle filter rod, and spiral structure component, to form a five-element composite multi-segment cigarette structure, further improving the smoking experience of heated cigarettes.

[0055] In the production process, the five-element composite multi-segment cigarette structure in this embodiment can be produced separately and then assembled. For example, the hollow filter rod, the gear structure filter rod 1, the hollow cigarette segment and the guide 6 can be formed into binary composite filter rods on the filter rod composite equipment. Then, the two binary composite filter rods are joined together by a twisting machine to produce a heated cigarette of this structure type. Finally, a filter rod is set at the mouthpiece end, which is the 1+2+2 production mode.

[0056] Alternatively, any two of the above-mentioned cigarette filter rods, hollow filter rods, porous filter rods, Collins filter rods, concentric circle filter rods, and spiral structural components can be combined to form a binary composite filter rod, any three can be combined to form a ternary composite filter rod, and any four can be combined to form a quaternary composite filter rod, and can be produced using 3+2 mode, 2+3 mode, 1+4 mode, 4+1 mode, etc., with 3+2 mode or 1+4 mode being preferred.

[0057] This utility model provides a gear-guided flow structure for heated cigarettes. By setting the heated cigarette into a multi-component composite structure and incorporating a gear-structured filter rod 1, the smoke is diverted to the surface of the filter rod after passing through it. This allows the smoke to fully contact the external environment, thereby cooling it and improving the smoker's smoking experience. Specifically:

[0058] The heating chamber 5 inside the smoke-generating section 3 is equipped with a hollow heating tube 4 and its vent holes, which enables the heating element to heat the smoke-generating material accurately and evenly. The two work together to achieve efficient smoke generation of the tobacco matrix. The hollow heat-insulating tube in the guide cavity 7 not only insulates the heat but also provides some support and guides the airflow. The gear structure filter rod 1, with its external tooth groove 2 design, further guides and diverts the smoke to cool it down. It diverts the smoke that was originally concentrated in the center to the surface of the gear structure filter rod 1, expands the contact area between the smoke and the external environment, and achieves rapid cooling with the help of the outside air. This effectively solves the problem that the temperature of the heated cigarette smoke is too high and affects the smoking experience.

[0059] In addition, the gear structure filter rod 1 is made of cellulose acetate material. Its porosity and molding characteristics not only meet the molding requirements of the gear structure, but also facilitate the flow and diversion of flue gas inside and on its surface. At the same time, it can filter large particles of harmful substances and improve the flue gas filtration effect.

[0060] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A gear-guided flow structure for heating cigarettes, characterized in that, It includes a gear-structured filter rod, a smoke-generating section, and a guide member. The two ends of the smoke-generating section are respectively connected to the gear-structured filter rod and the guide member. The smoke-generating section has a heating chamber inside, and the guide member has a guide chamber inside. The heating chamber and the guide chamber are in communication. The gear-structured filter rod has multiple toothed grooves along the axial direction on the outer ring side. The cross-section of the toothed groove is semi-circular. The ratio of the depth of the toothed groove to the tooth diameter is between 0.25 and 0.

75. The gear-structured filter rod is covered with molded paper.

2. The gear-guided flow structure for heating cigarettes as described in claim 1, characterized in that, The ratio of the axial length of the gear-structured filter rod to the axial length of the smoke-generating section is between 0.3 and 0.

5.

3. A gear-guided flow structure for heating cigarettes as described in claim 1, characterized in that, The heating chamber is configured as a cylindrical cavity structure along the axial direction of the smoke-generating section, and the guide cavity is configured as a cylindrical cavity structure along the axial direction of the guide member.

4. A gear-guided flow structure for heating cigarettes as described in claim 3, characterized in that, The diameter of the guide cavity is greater than or equal to the diameter of the heating cavity.

5. A gear-guided flow structure for heating cigarettes as described in claim 1, characterized in that, The guide cavity of the guide member is provided with a hollow heat insulation tube.

6. A gear-guided flow structure for heating cigarettes as described in claim 5, characterized in that, The hollow heat insulation tube is configured as any one of glass fiber tube, high silica fiber tube, silica sleeve, high silica sleeve, and basalt fiber tube.

7. A gear-guided flow structure for heating cigarettes as described in claim 1, characterized in that, The heating chamber is equipped with a hollow heating tube.

8. A gear-guided flow structure for heating cigarettes as described in claim 7, characterized in that, The hollow heating tube has multiple vent holes on its side wall.

9. A gear-guided flow structure for heating cigarettes as described in claim 1, characterized in that, The gear-structured filter rod is made of cellulose acetate material.

10. A gear-guided flow structure for heating cigarettes as described in claim 1, characterized in that, The radial diameters of the gear-structured filter rod, smoke-generating section, and guide are all consistent.

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